Modified uterine sound for placing sperm in the uterine cavity.

[1]  J. Breen,et al.  Culdoscopy for infertility. An analysis of 203 cases. , 1959, American journal of obstetrics and gynecology.

[2]  C. T. Javert.  Fertility after cervical dilatation. , 1959, American journal of obstetrics and gynecology.

[3]  L. J. Harris.  Vaginal obturator in improving fertility; a preliminary report. , 1956, Fertility and Sterility.